Your mistress is sick to death of you being so obsessed with her. The only solution now is a lifetime of chastity for your constantly-erect cock.

Get over here, my little slave. I'm going to be honest with you: I'm sick of the way that you obsess over me. It's getting to the point now where I feel as if you're going to do something really stupid because you're always horny when we hang out. You can't seem to keep yourself non-erect, so I'm going to do the only thing I can: lock you up.

If you think that chastity sounds bad, let me assure you from the get go: it is. Your cock is going to be inside this tiny little cage until I say otherwise. If I decide to tease you while you're locked inside, you're never going to be able to stroke yourself. I can't wait to have you in my complete control, so let's get this party started and clamp you up, yeah?